Question

Two equal sides of an isosceles are each 3 m less than 3 times o third side. Find length of equal sides, if perimeter is 36 m. A. 10 m m B. 15 C. 20 m D. 25 m​

Answer 1

Answer:

B. 15m

Step-by-step explanation:

Let the third side be x

so the two equal side are 3x-3 and 3x-3 (as both are equal)

A.T.Q.

2{3x-3} + x = 36

6x - 6 + x = 36

7x = 42

x = 6

so the equal sides are of length

3x-3

3 × 6 - 3

18 - 3

15

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